import java.util.Scanner;

public class Zxf3 {
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        System.out.println("输入千克数");
        int g=in.nextInt();
        double bi=g/0.4535924;
        String ban="磅";
        System.out.println(bi+ban);


    }
}
